Door-check



W. J. TYNON.

D003 GHEGK..

(No Model.)

Patented Apr. 9, 1,4%.95

Tras

ATENT arten.

WILLIAM J. TYNON, OF DE SOTO, ASSIGNOR TO OTTO BUEHRMANN, 'OF ST. LOUIS, MISSOURI.

Doon-CHECK.

SPECIFICATION formi-11g part of Letters Patent No. 537,250, dated April 9, 1 895.

Application ined Jun@ 25, 1894.

To, all whom; it' may concern."

Be it known that I, WILLIAM J. TYNoN, of the city of De Soto, Jefferson county, State of Missouri, have invented certain new and useful Improvements in Door-Stops, of which the following is a full,^clear, and exact description, reference being had to the accompanying drawings, forminga part hereof.

a spring-actuated plunger operating within said casing, a plunger operating within said plunger, and other details of construction that will be hereinafter described and claimed.

The object of my invention is to provide a door stop that will possess superior advan-v tages in point of simplicity, durability an general efficiency. f

' A further object of my invention is to con-` struct a door stop that may be operated, or

thrown into or out of engagement bya slight movement ofthe foot.

In the drawings: Figure 1 is an edge elevation of a door, the same having my improved stop attached thereto. Fig. 2 is a vertical sectional View taken on the indicated line 2-2 of Fig. 1, and looking -in the direction indicated by the arrow AP line 4-4 of Fig. 2. Fig. 5 isa cross-sectional View on the line 5 '5 yof Fig. 2. Fig. 6 is a crosssection'al view on the line 6-6 of Fig. 2..

Referring by numerals to the accompanying drawings, 1 indicates a door, to which (near the lower edge) is secured myimproved door stop. l

A plate 2, preferably rectangular in form and provided with a series of screw-holes 3,. has formed integral therewith and vertically positioned upon its outer face, an open ended cylindrical casing 4. The interior of the up-` per end of this casing is screw-threaded and adapted to receive an exteriorly screwthreaded cap 5, the same having a centrallyl Fig. 3 is a verticalV cross-sectional vlew of my improved .door stop. Fig. 4 1s a cross-sectional view on thev Serial No. 515 |587. (No model.)

Extendingfrom a point near the top of the cylindrical casing 4 to a point near the center thereof is a slot 9, its Vlower end terminating with a laterally formed notch, or slot 10.

The plunger 8.operating Within the casing 4 is of a length and diameterA less than that of said casing, is provided with a vertical n bore, or recess, 11 extending from the top to My lnventlon relates to improvements inl door stops, and consists in a suitable casing,

a point below the longitudinal center of said plunger, and-also with a bead or flange 12 on its lowermost edge. vThe `peripheryof the upper end of this plungerS isscreW-threaded and adapted to receive an interiorly screwthreaded cap 13'.Y This cap is provided with acentrally located aperture 14.

A plunger 15 in the form of'a rod` passes l through the aperture 6 in the cap 5, and its lower end through the aperture 14 in the cap V13. The lower end of this plunger 15 is pro-- vided with an annular bead or flange 16 which effectually prevents said plunger from leaving the recess or bore 11 within the plunger 8. The upper end of this plunger 15 is provided with a cap 17 held in positionV by a screw 18.

Formed integral with the body of the plunger 15, and at a point slightly below the longitudinal center thereof, is a disk, or annular flange, 19 of a diameter equal to the inner diameter of the casing 4. The object of this ange 19 is to more firmly guide the plunger l5 in its movement, the range of motion of this flange 19 being from the cap 13 to the cap 5. A horizontally projecting pin or stop 2O is formed integral with this annular iiange 19 and extends laterally through the slot 9 in the cylindrical casing 4. It projects a slight distance beyond the periphery of said casing 4.

A torsional coil-spring 21 surrounds the plunger 8, and has its upper end passed through an aperture 22 in the annular flange 19. The lower end of this torsional spring 21 passes through one of a series of apertures 23 that are formed in the inwardly extending annular iiange i7 on the lower end of the cylindrical casing 4. Byhaving such a Series of apertures the tension of said spring can be, to a certain extent, graduated or regulated.

An ordinary compression'coil-spring 24 occupies the recess or bore 11 in the plunger 8, and beneath the lower end of the plunger 15.

` An annular ring 25 is loosely mouted upon the IOO lower end of the plunger 8 immediately' below the cylindrical casing 4. A rubber foot 26, preferably circular in form, ,surrounds the lower end of the plunger 8 and is securely held thereon by means of the bead,or flange, 12.

By means of suitable screws passed through the-apertures 3 in the plate 2, the stop is secured upon the door approximately in the position as shown in Fig. 1. In this figure the plungers and rubber foot are shown in their normal position, or at an elevated point, said rubber' footbeing disengaged from the floor.

The operation is as follows: Then it is desired to set or hold a door in any desired postion, a person manually or pedally forces down the plunger 15. This necessarily moves the annular flange 1i) downwardly, the pin 2O thereof sliding in the vertical slot 9. As soon as the rubber foot 26 contacts with the floor, and the plunger 15 is pushed farther downward, the coil-springs 21 and 24 will be compressed. When the plunger' 15 has reached the limit otits downward movement, the pin 20 will be directly opposite the laterally positioned slot or notch 10. By reason of the power stored in the torsioually bent spring 2l, said pin 20 will be thrown into said lateral slot or notch, and in such a manner as to firmly and securely position the various parts in the desired position, or as shown by dotted lines in Fig. 1. When in this position the rubber foot will be in close contact with the floor, the plunger S at its downward limit of movement, the springs 21 and 21 compressed,the plunger 15 at its limit ot downward movement, the annular flange 19 thereof being adjacent the cap 13 of the plungerS. Thus the door is firmly held in therequired position. When it is de sired to dsengage the foot from the floor, the pin 2O is thrown ont of the lateral notch or slot 10 and into the vertical slot 9. The power stored within the springs 21 and 24 will cause the two plungers to reassume their normal position, as shown in Figs. 1, 2 and 3. The olice of the coil-spring 24 is to act directly upon the plunger 15, which, as soon as the' bead or flange 1G comes in contact with the cap 13, will necessarily raise the plunger 8 carrying the foot 26. The eoilspring21 ma- `terally assists in this operation, but the main Vrecess or bore formed in the first mentioned plunger, a pin orlug positioned upon said, last mentioned plunger and operating within a slot formed in the wall of the casing, a coilspring interposed between the two plnngcrs, and a torsionally bent spring positioned upon the rst mentioned plunger.

2. In a door stop, the combination of a cylindrical casing, a plunger operating within said casing and having therein a vertical bore, a plunger adapted to enter the rst mentioned plunger, a coilspring interposed between said plungers and within the bore, a pin formed integral with the second plunger, said pin operating within a slot formed in the casing, and a torsionally bent spring coiled upon thefirst mentioned plunger and secured to said second mentioned plunger for the purpose otl guiding the pin Within the slot.

3. In a device of the class described, a `:ertically moving hollow plunger, a rubber or analogous foot mounted upon the base of said plunger, a second plunger adapted to operate within said hollow plunger, a spring interposed between said plungers, a spring coiled around said first mentioned plunger and con neeted to the second plunger, all operating within a cylindrical easing.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM J. TYNON.

Witnesses:

E. E. LONGAN, MAUD GRIFFIN. 

